Research of Macroscopic Control System Applied in Separate Layer Water Injection in Intelligent Oilfield

With constant progress gained from fine waterflooding, monitoring methods for reservoir performance have become more diverse, which results in an increasing amounts of data. To realize classified management of separate injectors, a macroscopic control system applied in separate layer water injection is proposed. By virtue of real-time surveillance function of digital separate layer waterflooding technology, the paper presented a macroscopic control system, to ensure effective management and utilization of large sets of available test data. This system consists of three major modules, which are data interpretation and utilization module, injector automatic monitoring module and block-reservoir dynamic adjustment and control module. In 2017, a pilot area that represents ultralow permeability reservoir was chosen to conduct field trial. Meanwhile, a functional test was carried out focusing on the proposed macroscopic control system. The results indicated that it realized digitization for automatic adjustment in single well and real-time monitoring of block reservoir in the whole process. It provides technical support for achieving macroscopic control in intelligent oilfield.